Wide Area Federal Aviation Administration Augmentation System (WAAS) Ionospheric Effects Symposium By: Jason Burns Technology Evolution Lead Federal Aviation Administration Date: May 12, 2015
Agenda • WAAS Overview • Ionospheric Effects on WAAS • Future Plans • User Segment Update Ionospheric Effects Symposium Federal Aviation 2 May 12, 2015 Administration
WAAS Overview Ionospheric Effects Symposium Federal Aviation 3 May 12, 2015 Administration
WAAS Program Overview • WAAS provides precise navigation and landing guidance covering the entire National Air Space (NAS) • Combination of ground-based and space-based assets • Augments the Global Positioning System (GPS) Standard Positioning Service (SPS) • Provides both safety and capacity improvements in the NAS and has been operational since 2003 • Can reduce FAA operations costs by enabling the removal of legacy ground-based navigation infrastructure Ionospheric Effects Symposium Federal Aviation 4 May 12, 2015 Administration
WAAS Infrastructure Ionospheric Effects Symposium Federal Aviation 5 May 12, 2015 Administration
WAAS Supported Operations Ionospheric Effects Symposium Federal Aviation 6 May 12, 2015 Administration
Note: Plots are of LPV availability not LPV-200 WAAS Coverage 2003 IOC – LPV Coverage in lower 48 states only 2015 Coverage - Full LPV 200 2008 Coverage - Full LPV 200 Coverage in CONUS (3 Satellites) Coverage in CONUS (2 Satellites) Ionospheric Effects Symposium Federal Aviation 7 May 12, 2015 Administration
WAAS RNP 0.3 and RNP 0.1 Coverage Ionospheric Effects Symposium Federal Aviation 8 May 12, 2015 Administration
WAAS Development Phases • Phase I: IOC (July 2003) Completed – Provided LNAV/VNAV/Limited LPV Capability • Phase II: Full LPV (FLP) (2003 – 2008) Completed – Improved LPV availability in CONUS and Alaska – Expanded WAAS coverage to Mexico and Canada • Implemented new WRSs in these countries which increased the number of ionospheric measurements at the edge of WAAS service volume • New GEOs implemented with improved ranging performance. This provided increased continuity and availability for WAAS operations. • Phase III: Full LPV-200 Performance (2009 – 2014) Completed – Improve performance during moderate ionospheric activity • Implemented Kriging to reduce conservatism in models and increase availability – Preparation for GPS L5 transition • Phase IV: Dual Frequency (L1,L5) Operations (2014 – 2044) – Sustain WAAS GEOs – Technology refresh to address equipment obsolescence – Infrastructure modifications to support future L1/L5 user capability – Transition from use of L2 P(Y) to L5 in WAAS and provide dual-frequency service • Planning to transition within 2 years of GPS L5-signal Full Operational Capability (FOC) Ionospheric Effects Symposium Federal Aviation 9 May 12, 2015 Administration
Dual Frequency Operations • ‘Sunset’ of L2 P(Y) semi-codeless technique compels WAAS to use another signal to maintain current service – USG Federal Register Notice identified ‘sunset’ in December 2020 – L2C/L5 readiness dates slipping (updates in Federal Radio-navigation Plan) • In May 2014 WAAS Final Investment Decision for Phase IV Segment 1 Dual Frequency Operations (DFO) was approved – Segment 1 - Develop infrastructure improvements to support L5 & Tech Refresh – Segment 2 - Implementation of L1/L5 user capability Ionospheric Effects Symposium Federal Aviation 10 May 12, 2015 Administration
Current SBAS Availability Ionospheric Effects Symposium Federal Aviation 11 May 12, 2015 Administration
SBAS Availability w/ L1/L5 User Ionospheric Effects Symposium Federal Aviation 12 May 12, 2015 Administration
Ionospheric Effects on WAAS Ionospheric Effects Symposium Federal Aviation 13 May 12, 2015 Administration
PRN 29 Maintenance Elevated Geomagnetic Activity “WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015. Ionospheric Effects Symposium Federal Aviation 14 May 12, 2015 Administration
Elevated Geomagnetic Activity “WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015. Ionospheric Effects Symposium Federal Aviation 15 May 12, 2015 Administration
“WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015. Ionospheric Effects Symposium Federal Aviation 16 May 12, 2015 Administration
“WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015. Ionospheric Effects Symposium Federal Aviation 17 May 12, 2015 Administration
Future Planning Ionospheric Effects Symposium Federal Aviation 18 May 12, 2015 Administration
WAAS Phase IV Investigations • Dual-Frequency Multi-constellation Capability – International focus is on taking advantage of other GPS like constellations • International Civil Aviation Organization (ICAO) Navigation Systems Panel (NSP) has developed work plan that supports development of future standards for use of other Global Navigation Satellite Systems (GNSS) • ICAO working on CONOPS addressing all DFMC applications (e.g. SBAS, GBAS) – User equipment standards for Dual-Frequency operations • FAA working with SBAS Interoperability Working Group (IWG) on definition document that provides the basis for interface design and MOPS development for L1/L5 and multi-constellation • Advanced RAIM (ARAIM) – Avionics-centric approach to dual-frequency multi-constellation – ARAIM subgroup developing more detailed concept definition • Will be used to coordinate standards development with ICAO, RTCA and EUROCAE • Updated Milestone 2b report analysis and conclusions based on public feedback and incorporate in Milestone 3 report at meeting held the week of March 23 rd 2015 • The Milestone 2b report to be published at following meeting when formal review cycle completes http://www.gps.gov/policy/cooperation/#europe Ionospheric Effects Symposium Federal Aviation 19 May 12, 2015 Administration
User Segment Update Ionospheric Effects Symposium Federal Aviation 20 May 12, 2015 Administration
Users Depending on WAAS • Approximately 82,000 WAAS equipped aircraft in the NAS – WAAS receivers provided by companies such as: Garmin, Universal, Rockwell Collins, Honeywell, Avidyne, Innovative Solutions & Support (IS&S), Thales and Genesys Aerosystem (Chelton) • Since 2006, aircraft equipage rates has increased each year • Smaller airports and communities they serve are within reach, even in low visibility weather conditions • All classes of aircraft are served in all phases of flight • Enabling technology for NextGen programs – Automatic Dependent Surveillance Broadcast (ADS-B) – Performance Based Navigation (PBN) • Ex. - Area Navigation (RNAV), Required Navigation Performance (RNP), and Point in Space (PinS) procedures Ionospheric Effects Symposium Federal Aviation 21 May 12, 2015 Administration
Airports with WAAS LPV/LP Instrument Approaches As of March 5, 2015 - 4,120 LP/LPVs combined - 3,534 LPVs serving 1,726 Airports - 914 LPV-200’s - 2,395 LPVs to Non-ILS Runways - 1,139 LPVs to ILS runways - 1,638 LPVs to Non-ILS Airports - 586 LPs serving 423 Airports - 583 LPs to Non-ILS Runway - 3 LPs to ILS Runways Ionospheric Effects Symposium Federal Aviation 22 May 12, 2015 Administration
Ionospheric Effects Symposium Federal Aviation 23 May 12, 2015 Administration
Backup Slides Ionospheric Effects Symposium Federal Aviation 24 May 12, 2015 Administration
Federal Register Notice • L1/L2 Sunset – In 2008 the Office of Space Commercialization produced a Federal Register Notice detailing the U.S. Government's plan to phase out codeless and semi-codeless [L2 P(Y)] access to GPS by 31 December 2020 – FAA concern with the elimination of L2 P(Y) semi-codeless relationship prior to ability to transition to the new L5 signal – Federal Radionavigation Plan (FRP) is under revision • Expect 2014 FRP language to support WAAS transition schedule – DoD GPS satellite launch plans continue to delay FOC of L2C and L5 service • New dates will be included in 2014 FRP Ionospheric Effects Symposium Federal Aviation 25 May 12, 2015 Administration
Legend Milestone WAAS Schedule Service Ended Service Started Satellite Development CY11 CY12 CY13 CY14 CY15 CY16 CY17 CY18 CY19 CY20 FAA Independent SC Development 7/15 Activities Comm Upgrades 1/13 5/16 G-III Test Circuits System-Wide G-III Receiver 3/13 3/14 9/16 Development Production Fielding 10/17 GEO 5 DFO and GEO Contracts Eutelsat 117 West B (Satmex 9) GEO 6 GEO 7 11/15 Option Years AMR Base Contract Complete Reacquired 7/17 CRW Base Contract Complete 7/17 CRE Base Contract Complete 12/13 9/14 Dual Frequency Segment 1 Segment 2 DFO SIR DFO Award
WAAS Enables Performance Based Navigation Ionospheric Effects Symposium Federal Aviation 27 May 12, 2015 Administration
Current WAAS GEO Coverage Ionospheric Effects Symposium Federal Aviation 28 May 12, 2015 Administration
Recommend
More recommend
